The Acorn-Gatherer-an Inevitable Tragedy

Richard Jefferies' The Acorn-Gatherer depicts the miserable life of an illegitimate child and his whole family in a backward village. Through a Freudian tripartition of the human psyche combined with social analysis, this paper intends to explore the cause of the tragic life. Through the above analysis, this paper maintains that the life of the protagonist is an inevitable tragedy.     

Using of the surface plasmon resonance cytosensor for real-time and non-invasive monitoring of cellular effects in living C6 cells induced by PMA

By cell and molecular biology, the traditional life science research has been improved into modern ex-perimental science. Because cell is the basic structural and functional unit of the mysterious life, the study of life phenomena will be ultimately embodied into the study of cell biology. How to acquire a dynamic knowledge of the intricate biomolecular reactivity and process in living cells has become one of the hotspots in recent biological researches. For the complexity of cellular effects,…     

Tool life modeling for evaluating the effects of cutting speed and reinforcements on the machining of particle reinforced metal matrix composites

The wear of cutting tools in the machining of 2024Al alloy composites reinforced with Al₂O₃ particles using varying sizes and volume fractions of particles up to 23.3vol% was investigated by a turning process using coated carbide tools K10 and TP30 at different cutting speeds. Machining tests were performed with a plan of experiments based on the Taguchi method. The tool life model was developed in terms of cutting speed, size, and volume fraction of particles by multiple linear regressions. The analysis of variance (ANOVA) was also employed to carry out the effects of these parameters on the cutting tool life. The test results show that the tool life decreases with the increase of cutting speed for both cutting tools K10 and TP30, and the tool life of the K10 tool is significantly longer than that of the TP30 tool. For the tool life, cutting speed is found to be the most effective factor followed by particle content and particle size, respectively. The predicted tool life of cutting tools is found to be in very good agreement with the experimentally observed ones.     

An empirical research on the field of wireless charging based on patent life length

With the aid of patent life cycle theory,and from the perspective of patent life span,this paper choose the ‘times of citation-time sequence'data of patents as an observation index to research on related patents in the field of wireless charging by applying the adjusted ‘double-proportion'obsolescence method. The research reveals the rules of patent life span in the field of wireless charging,finding that the first 5 years since patents were authorized is the core period for the patents to play their full value,and also discovers the development law of merging technology patents.     

Reality,Fantasy and Memory——A Tentative Analysis of the Stage Techniques in Death of a Salesman

Death of Salesman is,to a great extent,a memory play.By using lots of literary techniques and displaying a mixture of the flashback of the past life and the reality as well as the fantasy of the hero,this play successfully pre- sents a unique style of realism and expressionism,through which,the author unfolds before us the tragic life of Willy Loman,the main character of the play.     

RELIABILITY OF AEROCRAFT GEAR FATIGUE STRENGTH

With the method of group test, fourty pairs of carburization-quenching gears made from 16NCD13 steel for aerocraft were tested to research the contacting fatigue strength on tooth flank. As a result, the samples of fatigue life at the moments when the pitting appears and reaches failure criterion were obtained at four stressing levels respectively. The distribution rule of fatigue life were distinguished, and the distribution parameters were estimated by statistical analysis. Based on that, the R-S-N curves with confidence 95% of contacting fatigue on gear tooth flank were evaluated. Therefore, the basic data were provided for the reliability design of the gears and prediction of their life.     

A new model for the life prediction of GH4133 under TMF conditions

Thermal mechanical cyclic strain tests were carried out under in-phase and out-of-phase conditions on a Nickel-base Superalloy GH4133 in the temperature range of 571-823℃. Based on analyzing the present models of TMF (thermal mechanical fatigue) life prediction, a new model for predicting nickel-base superalloy TMF lifetime was proposed.TMF life of superalloy GH4133 was calculated accurately based on the new model. Experimental TMF life has been compared with the calculatedresults and all results fall in the scatter band of 1.5. The calculating results show that the new model is not only simple, but also precise. This model will play great roles in life prediction of the metal materials and the engineering components subjected to non-isothermal service conditions.     

Effect of moisture on the aging behavior of asphalt binder

The moisture aging effect and mechanism of asphalt binder during the in-service life of pavement were investigated by laboratory simulating tests. Pressure aging vessel (PAV) test simulating the long-term aging of binder during the in-service life of pavement was modified to capture the long-term moisture aging effect of binder. Penetration grade tests including penetration test, soften point test, and ductility test as well as SuperpaveTM performance grade tests including viscosity test, dynamic shear rheometer test, and bending beam rheometer test were conducted to fully evaluate the moisture aging effect of binder. Fourier transform infrared spectroscopy test and Gel-permeation chromatography test were applied to provide a fundamental understanding of the moisture aging mechanism of binder. The results indicate that moisture condition can accelerate the aging of asphalt binder and shorten the service life of asphalt binder. The modified PAV test with moisture condition can well characterize the moisture aging properties of asphalt binder.     

On Anti-interpretation in Endgame——Man Is Unable to Change the Miserable Life ——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II. The Glass Menagerie is his first successful drama, which describes a tragic situation of family and means to say that Man is unable to change the miserable life, no matter whatever means he try. This essay focuses on the analysis of the arrangement of the four main characters： Laura, Amanda, Jim and Tom to reveal the theme. Laura is fragile. Amanda is brave. Jim is vital. Tom is sensible. And all of them develop and try the different means to struggle against life, but fail tragically. With the evidence, the paper comes to conclusion naturally that Man is unable to change the miserable life, and he dooms to fail.     

The Charms of Forrest Gump

From esthetic value, on the basis of human nature, this thesis intends to explore in what way Forrest Gump goes along with so many people‘s sensibilities and therefore wins the admiration of the public. The paper first gives an introduction to the film, then it focuses on exploring Gump‘ s philosophy of life from different aspects of the film, such as the symbolic meaning of the feather and running, the subtle romance between Gump and Jenny, Gump‘s intense loyalty to friend-ship, a consciousness of destiny and so on, which contribute to Gump‘s successful life, This paper ends with the scoring song “blowing in the wind” which reveals one of the themes of the film and it offers its readers with a spacious imagination of life.     

Western Dietary Culture Effects on China

As the China-western cultural exchanges of in recent years strengthen day by day,the diet used to be simple in our daily life is becoming more and more abundant,and presents the trend of the pluralism.This paper studies on Chinese dietary cultural and foreign dietary cultural,letting readers have a clear understanding of the effects of western dietary culture on Chinese people's life and Chinese economy.How to lead people to establish a correct consumption view is an important problem,throwing away its dross,picking up quintessence,and using western culture to improve people's life and China's economic development.     

Symbolic Significance of Colors in the Novel The Color Purple

This paper mainly explains the symbolic significance of colors in the novel The Color Purple by using theory of Alice Walker's Womaism.Black,in The Color Purple stands for humbleness,blue for a life of impulse,red for liberty and hope,purple for women's consummate happiness.And the choice of "purple" as its title,conceives a purple centered symbolic color system,which reveals the black women's expectation for living an ideal happy life.Walker gives an expression of black women's political condition,state of life under the racial and sexual oppression.Her intentions are to arouse women's consciousness of self and to call on them to be self-respected,self-supported and eventually be self-liberated.     

A New Method for Strengthening Wrought Superalloys-Micro-alloying with Phosphorus and Boron

The strengthening effect of phosphorus and boron on wrought superalloys is reviewed and discussed. The addition of phosphorus and boron can prolong the rapture life of some wrought superalloys over 3 times, and lowers the constant creep rate by an order of magnitude. By micro-alloying with phosphorus and boron, the alloys with extended rupture life are developed and the service temperature of IN718 alloy is enhanced, and the alloys which can be used for a long time at 700℃ with higher comprehensive properties can be developed.     

Electrochemical properties and structure of MlNi5-xSnx system

The electrochemical properties and structure of MlNiSnx (x=0-0.5) hydrogen storage alloys were investigated by pressure-composition isotherms, electrochemical measurements, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and atomic parameters. With a small amount of tin substitution, the cycle life increases by 52% (0.5C) and 42% (1.0C), but maximum discharge capacity decreases only by 3.0% and 3.5%, respectively. The cycle life is obviously improved by the low volume expansion and the formed SnO2 surface layers upon electrochemical cycling. The substitution of Ni by Sn leads to an increase of theunit cell volume and charge-discharge cycle life and decrease of the plateau pressure, hysteresis and the hydrogen storage capacity. The standard enthalpy of hydride formation decreases with increasing tin substitution. The main factor that influences the standard enthalpy of the hydriding reaction is the number of the outer orbit electrons and not the atomic size factor.     

Fatigue characteristics and microcosmic mechanism of Al-Si-Mg alloys under multiaxial proportional loadings

With the increasing use of Al-Si-Mg alloys in the automotive industry, the fatigue performance of Al-Si-Mg alloy has become a major concern with regard to their reliability. The fatigue characteristics and microcosmic mechanism of an Al-Si-Mg alloy under multiaxial proportional loadings were investigated in this research. As low cycle fatigue life and material strengthening behavior are closely related, the effect of equivalent strain amplitude on the multiaxial fatigue properties was analyzed. Fatigue tests were conducted to determine the influence of equivalent strain amplitude on the multiaxial proportional fatigue properties. The fatigue life exhibits a stable behavior under multiaxial proportional loadings. The dislocation structures of the Al-Si-Mg alloy were observed by transmission electron microscopy (TEM). The dislocation structure evolution of the Al-Si-Mg alloy under multiaxial proportional loadings during low cycle fatigue develops step by step by increasing fatigue cycles. Simultaneously, the dislocation structure changes with the change in equivalent strain amplitude under multiaxial proportional loadings. The experimental evidence indicates that the multiaxial fatigue behavior and life are strongly dependent on the microstructure of the material, which is caused by multiaxial proportional loadings.     

Estimating the Willingness-to-Pay for Urban Housing in Chinese Cities

The housing market, an important component of the urban economy, is closely integrated with urban development. Urban development attracts labor inflows which then increase the housing demand in the cities. Urban dwellers’ willingness-to-pay (WTP) for housing, as part of their living costs, depends on their incomes they can earn in the cities and the quality of life (QOL) they want to enjoy. Urban wage growth and quality of life improvements are always accompanied by increased demand and increased WTP. This ...     

Effect of boron addition on the microstructure and stress-rupture properties of directionally solidified superalloys

This study is focused on the effect of boron addition, in the range of 0.0007wt% to 0.03wt%, on the microstructure and stress-rupture properties of a directionally solidified superalloy. With increasing boron content in the as-cast alloys, there is an increase in the fraction of the γ′/γ eutectic and block borides precipitate around the γ′/γ eutectic. At a high boron content of 0.03wt%, there is precipitation of lamellar borides. Upon heat treatment, fine block borides tend to precipitate at grain boundaries with increasing boron content. Overall, the rupture life of the directionally solidified superalloy is significantly improved with the addition of nominal content of boron. However, the rupture life decreases when the boron content exceeds 0.03wt%.     

Jane Eyre,a Plain but Spectacular semi-autobiographic Portrait of Charlotte Bronte

Maybe life itself is a endured suffering. This is a story about a special and unreserved woman who has been exposed to a hostile environment but continuously and fearlessly struggling for her ideal life. It is interpreted as a symbol of the independent spirit.Through Jane Eyre,Charlotte Bronte realized her own dream and life pursuit.There she was the master of her own fate.     

Review of the fatigue behavior of hard coating–ductile substrate systems

With the wide application of coating materials in aerospace and other fields, their safety under fatigue conditions in service is important.However, research on the fatigue properties of ceramic hard coatings started late, and a unified standard is yet to be established to evaluate the fatigue life of hard coating–ductile substrate systems.Studies also present different opinions on whether coatings can improve or reduce the fatigue life of substrates.In this paper, the influence of the properties of ceramic coatings on fatigue performance is reviewed, and the effects of coating on the mechanism of fatigue crack initiation in substrates are discussed, aiming to help readers understand the fatigue behavior of hard coating–ductile substrate systems.     

Emily Dickinson：A Great Poet Brought Forth by Agony

This thesis discourse upon the influence of Dickinson’s life experience on the creation of poems.Dickinson,a sentimental,sensitive,shy woman living a reclusive life in Amherst village,becomes a legend in the history of American literature.She writes almost 1800 poems on various themes,mainly about "God","Death","Life","Love","Nature" and "Immortality".